Art of casting hollow structures in permanent molds.



E. A. GUSTER. ART OF CASTING HOLLOW STRUCTURES IN'PERMANENT MOLDS.

' APPLICATION FILED DBO. 10, 1908.

922,754. Patented May 25, 1909.

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UNI ED STATESEATEN EDGAR ALAN GUSTER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE OUSTER SANDLESS CASTING COMPANY, A CORPORATION OF DELAWARE.

ART OF CASTING- HOLLOW STRUCTURE S IN PERMANENT MOLDS.

Specification of Letters Patent.

Patented May 25, 1909.

Application filed December 10, 1908. Serial No. 466,765.

To all whom 'it may concern:

Be it known that I, EDGAR ALAN (JUsTER, a citizen of the United States, residing at the city of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in the Art of Casting Hollow Structures in Permanent Molds Having Permanent Cores,

. of which the following is a specification.

My invention has relation to the art of casting bath-tubs, urinals, bowls and various other hollow structures in a sectional permanent mold, whereof one section thereof forms the permanent core; and in such connection it relates particularly to pouring and chillingmolten metal swiftly to the point of setting to form homogeneous hollow metal structures, removing the mold-section and finally the cast homogeneous hollow structure, to permit then, if required, the enamel' broken section, of a permanent sectional mold having'a permanent sectional core for casting therein a bath-tub or the like. Fig. 2, is a transverse sectional View on the line a, as, of Fig. 1 and Fig. 3, is a sectional view, in detail of a temporary sand core for use in a permanent sectional mold having a permanent metal core, as part of the same, when castings or structures are to be provided with lugs or projections, the said sand core is so arrange as to be set into the sectional permanent mold for enabling the lugs or rojections with the main casting produce to be removed therewith.

Referring .to the drawings ,4, is a vertical plenmanent metal mold, comprisin the ged sections a and b, I), provide with our-holes c, c and 0 having channel-way ranches c 0 leading directly to a central depression corresponding to substantially the shape or form of the structure to be cast therein. The mold sections are offset in one part to form when the two sections of the mold are united a, receptacle 0', to receive sand or other molding material, for use, in instances where the hollow article or structure to be cast is to be provided with lugs or projections and this arrangement enables such a casting so provided with lugs'or projections to be freed from the mold, with the main portion of the structure cast and as an integral part thereof. The wall of the part b, of the mold 4, may be provided, as shown in Fig. 2, with tubular openings for assing a fluid therethrough, for water coo ing, the same. In the form of the mold, as clearly shown in Fig. 2, the art or section a, in the making of bowls, bat -tubs or the like, really is in fact the permanent core of the metal.

hinged sectional mold and the space o in rear thereof and conforming to the shape or form of the core section, may be cooled with a fluid, as water. Projecting from the section b, of the mold are rods (Z, d, referably adapted to be fitted with a detacha le clamping-bar (1 or other means, as clearly shown in Figs. 1 and 2. The type of the sectional mold, combining a permanent core therewith may be employed either vertically or horizontally and good results obtained, in the casting of different kinds or types of hollow metal structures, 'for being thereafter enameled, in some instances, for use.

Having thus described the nature and object of my invention, what I claim as new and desire to secure by Letters Patent is 1. The art of casting hollow metal structures, which consists in chilling swiftly molten metal to the point of setting within a permanent sectional metal mold in which one section thereof is the core of the mold and then cooling through the freeing of the mold section from the cast structure.

2. The art of casting hollow metal structures, which consists in chilling swiftly molten metal to the oint of setting within a permanent sectiona mold in which one section is the cooled metal core of the mold, hastenin coolin of the structure cast to fix the esta lished homogeneity of the said structure by freeing the mold section from the coresection and finally, removing the cast struc-, ture.

3. The art of casting hollow metal structures, which consists in chilling swiftly molt'en metal to the oint of setting within a per- In witness whereof, I have hereunto set manent sectiona mold in which one section i my signature in the presence of two subscrihis the fluid cooled metal core of the mold, I ing witnesses. I then coolin the cast structure through free- EDGAR ALAIN CUSTER.

5 ing themol section and finally removing the Witnesses:

said cast structure from the core section of J. WALTER DOU'GLASS, the mold. THOMAS M. SMITH. 

